Introduction to Psychrometrics w/ Eugene Silberstein

HVAC School - For Techs, By Techs

Bryan Orr

Education, Business, Self-improvement, Careers

4.9 • 1K Ratings

🗓️ 1 February 2022

⏱️ 47 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

Eugene Silberstein, a co-author of Refrigeration and Air Conditioning Technology (RACT manual), joins the podcast to give us an introduction to psychrometrics. Psychrometrics focuses on the properties of air and its contents, especially as they relate to human comfort.

To understand psychrometrics, we need to be able to quantify air: its weight, humidity, pressure, etc. We can do a better job as technicians if we figure out the air's content and see how it relates to the CFM and overall unit performance. That way, we can have a more holistic view of HVAC performance instead of just focusing on adding or recovering refrigerant to improve performance.

The psychrometrics chart helps us understand the conditions of the air based on quantities like water vapor, dew point, and more. The chart may intimidate techs, but it contains a wealth of information that can help technicians understand the air and the customer's comfort better.

Basic psychrometrics can also help us grasp why furnaces don't actually dry out air; they pull the moisture out of the air and pull it back in, so the absolute humidity stays close to the same. However, we commonly add humidifiers because the relative humidity drops with the temperature rise.

Eugene and Bryan also discuss:

How air filters and blower motors interact with the air
Things that affect the weight of air per cubic foot
Humidifying air and its effect on the density of air
High-pressure air moving to an area of lower pressure
How latent heat works
Pressure and the atmosphere
Absolute vs. relative humidity

Learn about ESCO's e-learning network at hvacr.elearn.network/ and Psychrometrics Without Tears HERE. ESCO also holds the HVAC Excellence Conference; learn more about that HERE.

If you have an iPhone, subscribe to the podcast HERE, and if you have an Android phone, subscribe HERE.

Check out our handy calculators HERE.

Check out information on the 2022 HVACR Training Symposium at https://hvacrschool.com/symposium/.

Transcript

Click on a timestamp to play from that location

0:00.0	The HVAC School Podcast is made possible by these brand partners.
0:09.2	Refrigeration Technologies at Refriggedec.com if you have not tried out their new venom packs.
0:15.0	Their venom packs are their viper cleaners in much smaller more concentrated packs.
0:21.0	They have really nice tiny fill spouts. Very concentrated takes up less
0:25.8	room on the shelves and these things are durable. Let me tell you you can throw them all around
0:29.4	and they don't break. Far more durable, far safer to have on a truck than your typical gallon cleaner
0:35.9	containers. If you haven't tried it yet, give it a try. It is the
0:39.2	venom packs from refrigeration technologies at refrigibilitytech.com, the name you can certainly trust for all of
0:46.8	your HVACR chemical means. carrier and carrier.com. Carrier has been a long-term sponsor of the podcast. They've made it
0:55.2	possible very early on for us to do what we do and they are the products that we sell day
1:00.0	and a day out. Everything from single stage equipment all the way up to the green speed extreme,
1:06.2	one of the most efficient products on the market today. Find out more about what carrier has to offer
1:11.2	and about becoming a carrier dealer by going to carrier.com.
1:16.3	Fieldpiece and Fieldpiece.com. Fieldpiece makes the entire suite of job link probes,
1:21.4	everything from monometers to index
1:24.2	cyclometers, line temperature clamps with rapid rail technology.
1:28.0	Once you use the field piece job link probes for checking the system,
1:32.1	you're not going to go back to anything else. It is what we use in our company.
1:35.8	We've been teaching it at the school and that students really love it. Even people who are
1:39.8	resistant to probes, even those who like typical analog type gauges because it's what we're used to.
1:45.2	I think once you try them, you're going to love them.
1:47.2	That's the Joblink probes from fieldpiece, fieldpiece.com.
	...

Please login to see the full transcript.

Previous episode | Next episode

Disclaimer: The podcast and artwork embedded on this page are from Bryan Orr, and are the property of its owner and not affiliated with or endorsed by Tapesearch.

Generated transcripts are the property of Bryan Orr and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.